In oil well drilling, drilling fluids are used to form a thin layer in the reservoir rock formation, which will prevent migratory flows from the well to the formation or vice-versa. The removal of this thin layer, called filter cake, formed mainly when non-aqueous fluids (paraffinic or olefinic) are used, is of fundamental importance for the inversion of rock wettability to occur and thus ensuring that success of the primary cementing operation. The fluids called flushing fluid are displaced between the drilling fluid and the cement paste. They act through chemical action in the dilution and removal of filter cake. They have dispersing additives (or drilling fluid thinners), detergents, and, when necessary, additives to inhibit clay swelling and filtrate reducers. When they are used in wells containing oil-based fluid, they also contain surfactants to reverse coating wettability and formation from oil-wet to water-wet. Flushing fluids need to be compatible with the cement paste and the drilling fluid, as they can cause a mixture with excessive viscosity capable of reducing the efficiency of displacement of the drilling fluid and, consequently, making the cement adhesion weak, in addition to the mixture cement paste and flushing fluid are resistant to compression within the limits established by standards. There are several works in the literature that prove the efficiency of removing flushing fluids that can be applied in the oil industry. The use of alcoholic micellar solutions and solutions containing mixtures of surfactants, the so-called Blends, are new technologies that have been used as a flushing fluid to remove the olefin-based drilling fluids and promote formation wettability inversion. In this sense,  this  work  developed  and  characterized  new  alcoholic  micellar  systems  from  ternary  diagrams  and  by blends  of  surfactants  formulated  with commercial non-ionic surfactants to be used as a cleaner in a temperature range (30°, 40°, 50°, and 65°C) that simulates the temperature achieved in the drilling of some oil wells and evaluates their behavior in relation to the cloud point in the removal of the filter cake inside the well. A simplex network design using the scheffé polynomial was made to choose the most efficient formulations in relation to plaster removal. For the formulation of Blends containing surfactants in brine, a 2n factorial study was developed to choose the optimum point of Blends of surfactant solutions that were also studied as a flushing fluid. These systems were subjected to the same tests as the previous system, that is, they were studied at a temperature range (30°, 40°, 50°, and 65°C) whose purpose was to verify the filter cake removal efficiency against the Cloud Point, simulating the behavior of these solutions and their behavior inside the well. For both study systems, the best points were used, the variation of the aqueous phase and its conductivity measurements at those temperatures. After this phase, the microemulsion systems and formulated surfactant blends were characterized by the study of filter cake removal efficiency tests, surface tension measurements, droplet diameter, and wettability, while the mixtures between the flushing fluid and the paste of cement were characterized by rheology, fluid compatibility and compressive strength (UCA), and X-ray diffractometry. The two new removal systems studied in this research proved to be efficient in removing the filter cake formed by the olefinic drilling fluid used in drilling wells oil and proved to be a more economical and a cleaner technology.